The Madagascar Dragon Tree is most definitely one of the easiest indoor plants to grow and maintain. Dracaena Marginata trees can grow up to 6ft high indoors, and they're slow growing. Bright conditions with shade is suitable for the dragon plant. Direct sunlight will damage the leaves. When it comes to pruning, You can remove old leaves that are ready to fall from the bottom of the trunk which will make it look more attractive. And, cut back stems to keep the plant to the size you want.